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70-483 question 197 discussion

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Download Free Microsoft 70-483 Exam Questions

You are developing an application.
The application contains the following code:

When you compile the code, you receive the following syntax error message: "A previous
catch clause already catches all exceptions of this or a super type ('System.Exception')."
You need to ensure that the code can be compiled. What should you do?

  • A Catch the ArgumentException exception instead of the ArgumentNullException exception.
  • B Throw a new exception in the second catch block.
  • C Catch the ArgumentNullException exception first.
  • D Re-throw the exception caught by the second catch block.
  • May 2, 2018, 05:20 AM

Question seems try { }catch(ArgumentException e) { } catch(ArgumentNullException e) { }

  • Apr 27, 2018, 06:16 PM

JUST GOT BACK FROM THE EXAM. The question is wrong here. At the exam the "catch" blocks were swapped: catch(Exception e){...} catch(ArgumentNullException e){...}. So the correct answer is C.

  • Mar 8, 2018, 02:28 PM

This question ,especially answer, doesn't have sense. Here is the exception class structure:   System.Exception     System.SystemException       System.ArgumentException         System.ArgumentNullException

  • Oct 17, 2017, 08:41 PM

A is the correct answer. when the if clause gets executed it throws an exception however since the method containing the if statement is called from within a try/catch block, this will result having the same exception being caught twice.(ArgumentNullException )

  • Jul 28, 2017, 01:00 PM

Indeed. Hopefully we get some kind bonus if we can figure out how a question was actually meant during the exam later.

  • Jul 26, 2017, 07:08 AM

The catch statements need to be in the reverse order for this question to make sense, and in that case C is the correct answer

  • Jul 23, 2017, 06:56 PM

the code is OK!!!

  • Jun 28, 2017, 06:20 PM

The question is wrong : The catches have been re-ordered. Should have shown -> catch(Exception e) { ... } catch(ArgumentNullException e) { ... } /* Then, why is ArgumentNullException never called ? */

  • Jun 27, 2017, 08:09 PM

Use the ArgumentException (option A), is not wrong, but the depicted sample also compile and run correctly, so.. i don´t know if the question is right.

  • Jun 15, 2017, 06:33 PM

The code compiles the way it's written

  • Jun 15, 2017, 05:41 AM

The code compile the way it's written, the question is wrong

  • Jun 12, 2017, 01:51 AM

I don't see why the code will have any compile time errors !!! This will work fine as Catch Exception is base class and caught at last !!

  • Jun 6, 2017, 05:57 AM

something is wrong here. Isn't it?

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